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Mass insulation meets the Jevons Paradox
A planned carbon capture storage plant sits uneasily alongside continued inaction on home insulation — how can we make sure any new ‘efficiency’ does not lead to greater consumption — and should we, ask ROX MIDDLETON, LIAM SHAW and JOEL HELLEWELL
Mass insulation meets the Jevons Paradox

IN 1865, the English economist William Stanley Jevons wrote a book called The Coal Question. In it, he considered a paradoxical fact about technological progress.

One might assume that increases in the efficiency of burning coal would mean that there would be a corresponding reduction in its use because less was needed to achieve the same aims. But as Jevons noted, “it is wholly a confusion of ideas to suppose that the economical use of fuel is equivalent to a diminished consumption. The very contrary is the truth.”

The Jevons Paradox states that increases in efficiency lead to increases in demand. A century-and-a-half later, it remains depressingly relevant.

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